Device for finishing concrete surfaces



April 5, 19 27.

, c. s. WALSH DEVICE FOR FINISHING coucamn SURFACES;

Filed March 1924 Coma/us WALSH Patented Apr. 5, 1927.

UNITED STATES CORNELIUS S. WALSH, OF LOS ANGELES. CALIFORNIA.

DEVICE FOR FINISHING CONCRETE SURFACES.

Application filed March 17, 1924. Serial No. 899,917.

My invention relates to and has for its purpose the provision of a device for rolling flat concrete surfaces, as in paving, sidewalks, floors, etc., in such manner that the coarse material of the mass, such as the crushed rock and gravel, is forced below the surface of the mass, thereby enabling the surface to be evenly and smoothly finished and without employing the additional top layer or finishing coat of mortar heretofore necessary.

It is also a purpose of my invention to provide a device of the above described character which is simple, inexpensive and durable in construction and capable of being easily and effectively operated by a sin gle operator.

I will describe only one form of device embodying my invention, and will then point out the novel features thereof in claims.

In the accompanying drawings Figure 1 is a view showing in end elevation, and partly in section, one form of tie vice embodying my invention in applied position to a mass of concrete;

Figure 2 is a view showing in front elevation, and partly in section, the device shown in Figure 1.

Referring specifically to the drawings, in which similar reference characters refer to similar parts, my invention comprises, in its present embodiment, a roller of suitable length, diameter and weight made up of a plurality of longitudinal segments 15 secured in cylindrical formation by means of heads 16. The heads 16 are arranged in the opposite ends of the cylinder and are provided with peripheral flanges 17 through which extend screw bolts 18 for engagement with the ends of the sections 15. The heads 16 are formed with axial bearings 19 in which the ends 20 of a yoke 21 are journaled. The yoke is of forked formation and is provided with a handle 22 adapted to be gripped by the operator in actuating the device.

The several segments comprising the roller are formed on their outer surfaces with ribs, projections or the like, indicated at 23. These ribs are preferably coextensive in length with the sections and are wedge shaped form in cross section, being tapered in width from their base or point of connection with the section toward their free edges so as to provide relatively sharp edges.

in practice, the device is adapted to be rolled over the surface of a mass of fluid concrete, that is, concrete in soft state. As the roller is advanced, the ribs 23 successively penetrate the mass, and in so doing engage the coarse particles, that is, the crushed rock and gravel. and thus force the latter downwardly within the mass so that the upper portion of the mass is made up of mortar only. In this manner voids are removed from the body of the concrete and all coarse particles submerged sufliciently to present a smooth and even surface to the mass.

I'Ieretofore, in order to produce the smooth and even finish of the surface of the concrete, it has been-necessary to employ a tamping device which must be manually lifted and either dropped or forced into the surface of the concrete in order to displace the coarse particles. In contrast to this extremely laborious operation, it is only neces sary with my device that it be rolled over the surface of the concrete in order to produce the desired smooth finish, such finish being effected solely by the relatively sharp edges presented by the ribs to force the coarse particles beneath the surface.

Although I have herein shown and described only one form of tool embodying my invention, it is to be understood that various changes and modifications may be made herein without departing from the spirit of the invention and the spirit and scope of the appended claims.

What is claimed is:

1. A. device of the character described comprising a cylinder formed with longitudinal sections, disk heads in the ends of the cylinder, peripheral flanges on the disk heads, fastening members extending through the flanges and engaging the sections for securing the latter in cylindrical formation, and ribs on the cylinder co-extensive in length therewith.

2. A device of; the character described comprising a. cylinder formed with longitudinal sections, disk heads in the ends of the cylinder, peripheral flanges on the disk heads, fastening members extending through the flanges and engaging the sections for securing the latter in cylindrical formation, and tapered ribs on the cylinder.

3. A device of the character described comprising a cylinder formed With longitudinal sections, disk heads in the ends of the cylinder, peripheral flanges on the disk heads, fastening members extending through the flanges and engaging the sections for securing the latter in cylindrical formation, ribs on the cylinder co-extensive in length therewith, a yoke journaled in the heads, and a handle on the yoke.

4. A device of the character described comprising a cylinder composedof longitudinally extending sections, disk heads in the ends of the sections, means for securing the sections to the heads, a yoke journaled in the heads, each of said sections having formed thereon longitudinally extending ribs of V-shaped cross section arranged to provide an uninterrupted series of projections upon the periphery of the cylinder adapted to successively penetrate a fluid mass containing coarse particles When the cylinder is rotated over the surface of the mass, so as to force the coarse particles beneath the surface and render the latter smooth.

5. A device of the character described comprising a cylinder having on its outer periphery longitudinally extending ribs arranged to provide an annular series of relatively sharp edged projections adapted to successively penetrate a fluid mass containing coarse particles When the cylinder is rotated over the surface of the mass, so as to taining coarse particles, to penetrate the mass in such manner that the coarse particles Wlll be forced beneath the surface, whereby the latter Wlll be rendered smooth.

CORNELIUS S. \VALSH. 

